🔧 Sonata - Cabin Air Filter Replacement

Your cabin air filter cleans the air going into the A/C and heater. Replacing it helps airflow, reduces musty smells, and can improve defrost performance.

Difficulty Level: Beginner | Estimated Time: 0.2-0.5 hours

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⚠️ Safety & Precautions

• ⚠️ Turn the ignition OFF before working under the dash.
• ⚠️ Don’t force plastic tabs—use gentle, even pressure to avoid breaking the glove box stops.
• ⚠️ Battery disconnect is not required for this job.

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🔧 Required Tools

You'll need the following tools for this repair:

• Nitrile gloves
• Safety glasses
• Flashlight
• Plastic trim removal tool (specialty)

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Cabin air filter - Qty: 1

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📋 Before You Begin

• Park on level ground and set the parking brake.
• Move any items out of the glove box so nothing falls out.
• Set your HVAC to OFF so it’s not blowing dust when you open the housing.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Open and empty the glove box

• Open the glove box fully.
• Remove manuals and loose items and set them aside.
• Use a flashlight so you can see the side stops and damper clearly.

Step 2: Unhook the glove box damper arm

• On the right side, find the small “damper” (a little arm that slows the glove box). It’s a small plastic linkage.
• Use a plastic trim removal tool (specialty) to gently pry the damper clip off its peg.
• Go slow—this clip can snap.

Step 3: Release the glove box stops

• With the glove box open, press inward on both glove box side walls near the top.
• This lets the built-in “stops” (the plastic bumpers) pass the dash opening so the glove box can swing down farther.

Step 4: Remove the cabin filter access door

• Behind the glove box, locate the rectangular cabin filter cover.
• Press the locking tabs and pull the cover straight off by hand.
• If it’s tight, use the plastic trim removal tool (specialty) lightly to start it.

Step 5: Remove the old cabin air filter

• Slide the filter straight out.
• Keep it level to avoid dumping leaves and dust into the blower housing.
• Put the old filter into a bag (it can be very dirty).

Step 6: Install the new cabin air filter

• Look for the airflow arrow on the filter frame.
• Install it with the arrow pointing down (toward the floor), which is the airflow direction on your Sonata.
• Slide it fully in until it seats evenly—don’t crush or fold it.

Step 7: Reinstall the cover and glove box

• Reinstall the filter cover by pushing it on until both tabs click.
• Lift the glove box back up and press in the sides again so the stops go back into place.
• Reconnect the damper arm on the right side by pushing it back onto its peg until it snaps in.

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✅ After Repair

• Start the car and run the fan on medium for 30 seconds.
• Check that airflow is stronger and there are no rattles behind the glove box.
• If you hear a ticking/leaf noise, the filter may not be fully seated—recheck the cover and filter position.

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💰 DIY vs Shop Cost

Shop Cost: $60-$140 (parts + labor)

DIY Cost: $12-$35 (parts only)

You Save: $48-$105 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 0.2-0.5 hours.

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🎯 Ready to get started?

HowToo makes it easy: same-day/2-day shipping on every part, plus all the tools and specialty tools you need! Check out the parts and tools sections below to add everything to your cart.